This stuff should really be on the bottle.

There are plenty of myths and theories about lathering up your locks—but now it's time to set the record straight. These ten little-known facts about shampooing will leave your hair bouncier and softer than ever before.

1. It's Important to Choose The Right Kind Of Shampoo
If you have fine hair, you'll benefit from a volumizing shampoo, whereas moisturizing shampoo is best for thicker hair.

2. Everyone Needs Clarifying Shampoo Every Once In A While
If your hair feels unusually dry, it's no longer responding to products, or you notice residue building up on your scalp, wash with clarifying shampoo to get rid of these pesky problems.

3. Blondes Should Clarify More Often
If you have blonde or chemically treated hair, you should use clarifying shampoo even more frequently. That's because chemical treatments make your hair more porous and more likely to absorb pollutants and product residue.

4. Shampoos Have a Two- to Three-Year Shelf Life
While your shampoo won't necessarily go "bad" after its expiration date, it won't work as well as a newer shampoo.

5. Massaging Shampoo Into Your Scalp Can Promote Healthy Hair
A good rub down can increase blood circulation in your scalp, which can help promote hair growth.

6. You Don't Need More Than a Quarter-Sized Squirt
Anything more will create extra foam, which can make it difficult for you to properly massage the shampoo into your scalp.

7. Water Temperature Matters
Washing your hair in scalding hot water will leave you with limp, lifeless hair. Try lathering up with warm water and rinsing with cool water. Cold water seals the hair's cuticle to lock in moisture and shine.

8. Price Doesn't Matter
Salon shampoos aren't always better than drugstore shampoos. So instead of looking at the price tag, focus on whether the shampoo formula works for you and your locks.

9. Dry Shampoo Works Best At Night
If you can't be bothered to wash your hair and decide to turn to dry shampoo, try applying it the night before. This will give your hair enough time to absorb all of the powder, and you'll wake up with extra volume.

10. You Can Make Shampoo Yourself
Combine baking soda, vinegar, and water to create shampoo that will eliminate smells and build up—without any of the harsh chemicals found in many store-bought shampoos.